$(3 \cdot x)^3 + (4 \cdot x)^2 - 3$

Number Theory Level 2

True or false:

$(3x)^3 + (4x)^2 - 3$ is always odd for all $x> 1$

True False

1 solution

Munem Shahriar
Nov 23, 2017

For $x = 3$

$(3 \times 3)^3 + (4 \times 3)^2 - 3 = 870 \longrightarrow \text{Even}$